外傷による幼若永久歯の歯冠破折の 4 例

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Recently, the traumatized immature permanent tooth of children shows a tendency toward increasing. Frequency of trauma is high in the 7∿8 year-old group, and the crown fracture accounts for nearly a half of all the traumatized teeth. This report describes only the treatment of traumatized immature permanent teeth without the pulp exposure in the maxillary anterior teeth region. The subjects are 12 traumatized patients who came to Outpatient Ward, Pediatric Dentistry, Kyushu Dental College Hospital. The tooth that had a fracture limited to inside the dentin was chosen as a material for study. The followings are typical cases. Case 1 : 7 years old, boy, 〓 crown fracture, observed for one month Case 2 : 7 years old, boy, 〓 crown fracture, observed for three months Case 3 : 8 years old, girl, 〓 crown fracture, observed for six months Case 4 : 7 years old, boy, 〓 crown fracture, observed for one year None of the cases had pulp exposure and they were class 1 or class 2 by Ellis. Slight percussion pain was found, but mobility was not seen at all. The observation of the fracture line was made first by using the X-ray. After the rubber dam for exclusion of moisture and formation of the fractured surface, dentin was lined with Fuji lining LC (G. C.). Light cured composite resin GRAFT LC II (G. C.) was chosen as a restoration material, and restoration was done by using the strip crown former. The occlusion adjustment and the final polishing were made after the light irradiation. In the observation of progress, examinations were made by the use of X-ray and electric pulp test. All cases showed a normal reaction in the electric pulp test and no abnormal impressions were seen in the radiographic examination. And other clinical problems, morphological changes, fracture, falling off, and so on were not seen. Good progress was shown.
九州歯科学会の論文
1996-06-25

外傷による幼若永久歯の歯冠破折の 4 例

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